1101990599999 has 4 divisors (see below), whose sum is σ = 1101997878960. Its totient is φ = 1101983321040.

The previous prime is 1101990599863. The next prime is 1101990600013. The reversal of 1101990599999 is 9999950991011.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1101990599999 - 2²⁰ = 1101989551423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101990599399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3407459 + ... + 3716820.

It is an arithmetic number, because the mean of its divisors is an integer number (275499469740).

Almost surely, 2^{1101990599999} is an apocalyptic number.

1101990599999 is a deficient number, since it is larger than the sum of its proper divisors (7278961).

1101990599999 is an equidigital number, since it uses as much as digits as its factorization.

1101990599999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7278960.

The product of its (nonzero) digits is 23914845, while the sum is 71.

The spelling of 1101990599999 in words is "one trillion, one hundred one billion, nine hundred ninety million, five hundred ninety-nine thousand, nine hundred ninety-nine".